How to use "muscles" in a sentence

They connect your body to them and look after it for you - your food, your muscles, everything

She let the hot water beat down on her neck for several minutes, until the stiffness in her muscles melted and flowed away.

Even these days, when most machines could be played with electronically validated value cards, the nickel duchesses wore black gloves to keep their hands from becoming filthy after hours of handling coins and pulling levers; they always sat on stools while they played, and they remembered to alternate hands when operating the machines in order not to strain the muscles of one arm, and they carried bottles of liniment just in case.

His hands moved over her, testing the firmness and resilience of her, and she touched him too, gently squeezing his shoulders, his arms, the hard muscles of his back

The amber light molded to his muscles.

The tension went out of her neck and shoulder muscles